Wrench



Patented May 12, 1931 FREDERICK SGHVIEZGEET, OF NEW YORK, 11. Y.

WRENCH Application filed. January 18, 1930. Serial No. 421,642.

This invention relates to new and useful improvements in a wrench.

The invention has for an object the provision of a device of the class mentioned which is of simple durable construction, dependable in use and eflicient in action, and which can be manufactured and sold at a reasonable cost.

The invention proposes a head member in with stationary and adjustable jaws having replaceable jaw plates and pivotally connected with a handle, and means for holding said head member in adjusted angular positions on its pivotal axis. The invention also proposes a means for disengaging said holding means in the closed position of said jaws.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and

to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure Fig. 1 is a side elevational view of a wrench constructed according to this invention.

Fig. 2 is a vertical sectional view taken on the line 22 of Fig. 1.

Fig. 3 is a vertical sectional view taken on the line 33 of Fig. 1.

Fig. l is a horizontal sectional view taken on the line of Fig. 3.

Fig. 5 is a view similar to a portion of Fig. 1 but illustrating another embodiment.

Fig. 6 is a v rtical sectional view taken on the line 6-6 of Fig. 5.

Fig. 7 illustrates various tongue constructions for use in lieu of. the construction shown in Fig. 6.

Fig. 8 is another view similar to a portion of Fig. 1, but illustrating a modification.

Fig. 9. is a fragmentary plan View of Fig. 8.

Fig. 10 is a side elevational view of a wrench of modified form constructed according to this invention.

The wrench consists of a head member 12 with a stationary jaw 13 and a movable jaw 14, both raving replaceable jaw plates 15,

and pivotally connected with a handle 16, and means for holding said head member in adjusted angular positions on its axis.

The movable aw ll has a slide portion 1? engaged thru an opening in the stationary jaw. The slide portion has longitudinal si de ribs 18' engaging in corresponding grooves in the stationary jaw. Teeth 19 ar formed upon one of the sides of said slide portion 17 and mesh with a worm 26 rotatively mounted in "he stationary jaw and reachable from the sides of the jaw due to an opening 21 formed in the latter element. The jaw plates are formed with tongue portions 22 engaging in grooves in the jaw, and a pin 23 engages thru the jaw and the tongues for holding the j a 1 plate in positions.

The head member 12 has a lug 2dengaging between a pair of lugs 25 formed on the handle 16. A tubular i'nember 26 is fixed in the said central lug 24: and engages in apertures in the lugs 25 so as to constitute the said pivr otal action. The handle 16 may be held stationary and the head member 12 pivoted in a horizontal plane any amount to one side or the other.

The means for holding the said head memher in adjusted angular positions on its pivotal axis consists of teeth 27 projecting from one of the ends of the tubular member 26 and encircled by teeth 28 projecting from the outer side or" one of the lugs 25. A stem 25) extends into the tubular member 26 and at its inner end is provided with a head 30, while at its outer end is provided with a disc 31 having a pair of diametrically opposite teeth 32 engageable between the space of the teeth 2? and 28 as shown in Fig. 4: to hold the lug 21 in a rotative latched position relative to the lugs 25. A spring 83 acts between the head 30 and the tubular member 26 for normally urging the stem 29 so that the teeth 32 engage between the teeth 27, 28. In the adjusting operation, the disc 31 is first manually raised from the tubular member 26 so as to permit manual adjustment of the head member 12 relative to the handle 16. lVhen a desired position is reached, the disc 31 is released and its teeth 32 again interengage the teeth 36 of the tubular member.

lift

In the modified form of the device illustrated in Fi 6, the wrench is shown provided with jaw plates differing from the jaw plates 15 in that they are provided with outer teeth 34 and facing flanges 35. The flanges 35 are arranged flush against the sides of the jaw and the pins n3 extend thru the flanges and the tongues 22 or accomplishing the securing in place. In other re spects the device is similar to the one ust described. In Fig. 7 several diilerent forms or tongues have been shown for use in lieu of the tongues of the jaw plates. Numeral 36 indicates a dovetailed tongue, 37 a T shaped tongue and 38 a bead tongue.

In the modified form of the device illustrated in Figs. 8 and 9, a vmeans has been shown for disengaging said lmlding means in the closed position of the jaw. It consist-a ot a flange 39 arranged upon the periphery of the disc Ell A linger -l0 engages upon the top oil? the flange 39 and extends into a recess it formed in the stationary jaw. At its inner end 42 this finger is pivotally mounted. A spring 43 acts between the stationary ja. and the finger tor normally urging it down against the flange so as to restrain upward motion of the disc 31.

This restraining action of the sprin prohibits the lifting of the linger L0 and subsequent angular adjustment ot the head member relative to the handle. A pin -l-l: projects from one of the ribs 18 of the slide 17 and in the completely closed position oi the jaw engages against the bottom of the linger to raise the finger off on the flange 2-39 so as to permit the raising oi. the disc. The worm :20 may be rotated for moving the jaws to the closed position and the pin lilto raise the linger.

In the modified form of the device illuss tratcd in Fig. 10, a handle 16 has been illusrated connirted at each end with a head member 12. This constiti'ites a double wrench construction so that either one of the head members may be used. In other respects it is similar to the terms previously described.

lVhile I have shown and described the preferred en'lhodiment of my invention, is to be understood that I do not limit myself to the precise construction herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent is 1. A wrench, comprising a head member with stationary and adjustable jaws pivotally connected with a handle, means for holding said head member in adjusted angular positions on its pivotal axis, means for securing said holding means in the adjusted positions and means automatically releasing said securing means in the closed position of the jaws.

A wrench, comprising a head member with stationary and adjustable jaws pivotally connected with a handle, and means for holding said head member in adjusted angular positions on its pivotal axis, comprising teeth projecting from a tubular member fixed in a lug from said head member, said tubular member engaging in apertures in lugs on said handle, a row of teeth on one otthe lugs otsaid handle and encircling said teeth, and a disc with diametrically opposite teeth engageablc simultaneously in the spaces between said teeth.

3. A wrench, comprising a head member with stationary and adj ustable jaws pivotally connected with a handle, and means for holding said. head member in adjusted angular j'iositions on its pivotal axis, ctnnprising teeth pri'ijecting from a tubular member fixed ii a lug from said head member, said tubular mem er engaging in apertures in lugs on said handle, a row of teeth on one of the lugs of said handle and encircling said teeth, and a disc with diametrically opposite teeth engageable simultaneously in the spaces between said teeth, said disc being resiliently urged into the engaged position.

A wrench, comprising a. head member with stationary and adjustable jaws pivotally connected with a handle, means for holding said head member in adjusted angular positions on its pivotal axis, and means for securing said holding means in the adjust ed positions and means automatically releasing said securing means in the closed position (it the jaws, comprising a linger pivotally mounted in a recess in said stationary jaw and engaging a flange upon a disc having teeth engaged between other teeth arranged to hold the head member at an angular position with said handle, a spring for urging the linger into the said engaged position, and a pm connected with the stationary jaw so that in closed position of the jaws to engage against said linger and lift the linger oil of the flange. ii

In testimony whereof I have allixed mv signature.

FREDEIHUK SCHlVEIGlEIRlT.

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